I know several programmers who don't speak any english and can understand the things well enough.

I think this is a valid project and while most programmers I know eventually understand a bit of what the identifier of english mean, the concepts are much better explained in their native language. They can much better translate it later when moving to a "serious" programming language or even to Excel or something like that.

Excel functions are also translated, so stuff like that is really helpful even if you aren't going to become a programmer.